Results 71 to 80 of about 292,760 (265)
IET Microwaves, Antennas & Propagation, 2011 With the ever-increasing demand for higher data rates and longer talk times, designing low-power RF front ends in wideband code division multiple access (WCDMA) mobile handsets is an important task. However, the power efficiency of current WCDMA RF front ends, particularly power amplifiers, is very low over the range of typical output power levels ...
J.H. Lee, A.B. Raju, R.M. Buehrer
openaire +1 more source
From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
Phosphoinositides and inositol phosphates as molecular glues
FEBS Letters, EarlyView.Inositol phosphates (IPs) and phosphoinositides (PIPs) regulate diverse eukaryotic processes. Beyond recruiting signaling proteins or acting as structural cofactors, recent studies suggest they mediate protein–protein interactions as natural molecular glues.
Aleshia Seaton‐Terry +9 more
wiley +1 more source
Multiuser MIMO-OFDM Systems using Subcarrier Hopping
, 2006 Recently space division multiple access (SDMA) assisted multiple-input–multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems invoking multiuser detection (MUD) techniques have attracted substantial research interest, which is ...
Jiang, M, Hanzo, L
core
ADAPTIVE ANTENNA ARRAY ALGORITHMS AND THEIR IMPACT ON CODE DIVISION MULTIPLE ACCESS SYSTEMS (CDMA)
, 2023 In mobile communications there is a need to increase the channel capacity. The increasing demand for mobile communication services without a corresponding increase in RF spectrum allocation (channel capacity) motivates the need for new techniques to ...
Hadgu, Dereje, Abdo, Mohammed
core
Analysis and suggestion of future 5G directions
Dianxin kexue, 2016 Firstly,the global research progress of 5G was briefly introduced,and the requirements and challenges of 5G were analyzed.The understanding and views on 5G were shared,and 5G was pointed out as an internet of things generation,a telecom IT generation ...
Shanzhi CHEN
doaj +2 more sources
Modelling stem cell differentiation related processes—A practical overview for biologists
FEBS Letters, EarlyView.Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar +4 more
wiley +1 more source
TelecomThis study investigates a dynamic switching method for signal relay protocols in Cooperative Pattern Division Multiple Access (Co-PDMA) networks. The proposed approach aims to fully utilize the advantages of signal relays in fading-prone environment ...
Wanwei Tang +3 more
doaj +1 more source
Research on Attack Construction and Intrusion Detection Methods for TDMA Wireless Sensor Networks [PDF]
Jisuanji gongchengThe open nature of wireless media poses a challenge for information security. The Time Division Multiple Access (TDMA) protocol is a predominant protocol tailored for time-sensitive industrial applications.
WEN Minchu, LIANG Wei, ZHANG Jialin
doaj +1 more source
Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source